Title:
HUE VAIABLE RETROREFLECTION SHEET
Document Type and Number:
WIPO Patent Application WO/2005/106541
Kind Code:
A1
Abstract:
A retroreflection sheet comprising a surface layer (1) consisting of at least one layer, and a plurality of retroreflective elements (3, 4, 5) positioned below it, wherein the retroreflective elements (3, 4, 5) retroreflect an incident light in a light source direction; at least one layer in the surface layer (1) is a light interfering layer that has its tone changed depending on a viewpoint, has its core material surface covered with at least one layer of substantially transparent coating layer, and has light interfering color material dispersed and added thereto, and mirror-reflects an incident light in a direction opposite to the light source; at least one layer of the retroreflection sheet is a colored layer containing a coloring material coloring a retroreflection light; and a retroreflection light and a mirror-reflection light develop different hues, whereby different hues in at least two colors are developed by light interference in daylight, and a retroreflection light develops a color different from that by a hue in daylight by means of night-time light projection to further develop a color different from that of the retroreflection light on a side opposite to an incident light.
Inventors:
YUKAWA SHIGEO
SUKOBOSHI JIRO
SUKOBOSHI JIRO
Application Number:
PCT/JP2005/007682
Publication Date:
November 10, 2005
Filing Date:
April 22, 2005
Export Citation:
Assignee:
KIWA CHEMICAL IND CO LTD (JP)
YUKAWA SHIGEO
SUKOBOSHI JIRO
YUKAWA SHIGEO
SUKOBOSHI JIRO
International Classes:
B32B7/02; B42D15/00; B44C1/10; B44F1/10; G02B5/12; G02B5/128; G02B5/26; G02B5/28; B44F1/04; (IPC1-7): G02B5/12; B32B7/02; G02B5/26
Domestic Patent References:
| WO2003035409A1 | 2003-05-01 | |||
| WO2003087896A1 | 2003-10-23 |
Foreign References:
| JPH06155693A | 1994-06-03 | |||
| JPH07128507A | 1995-05-19 | |||
| JP2003029012A | 2003-01-29 | |||
| JP2002019259A | 2002-01-23 | |||
| EP0905530A2 | 1999-03-31 |
Other References:
See also references of EP 1742090A4
Attorney, Agent or Firm:
IKEUCHI SATO & PARTNER PATENT ATTORNEYS (OAP TOWER 8-30, Tenmabashi 1-chome, Kita-k, Osaka-shi Osaka 26, JP)
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